Specific heat capacity of ice = 2,000 J/kg-°C latent heat of fusion of water = 334,000 J/kg specific heat capacity of water = 4,000 J/kg-°C A 1 kg block of ice is removed from a freezer where its temperature was –10°C. The amount of heat absorbed by the ice as it warms to 0°C is
a. 2,000 J
b. 4,000 J
c. 20,000 J
d. 40,000 J
e. 334,000 J
C
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In the summer in the northern hemisphere,
a. the Earth is closer to the Sun. b. the Earth's northern hemisphere is tilted toward the Sun. c. the Earth's northern hemisphere is tilted away from the Sun.
Most galaxies appear to be
a. composed of one star and seven planets. b. inside our Milky Way. c. located on the Earth. d. moving toward us. e. moving away from us.
The point P lies along the perpendicular bisector of the line connecting two long straight wires S and T perpendicular to the page. A set of directions A through H is shown next to the diagram. When the two equal currents in the wires are directed into the page, the direction of the magnetic field at P is closest to the direction of
a.
E.
b.
F.
c.
G.
d.
H.
e.
A.
Sound: You drop a stone down a well that is 9.5 m deep. How long is it before you hear the splash? The speed of sound in air is 343 m/s and air resistance is negligible.
A. 1.2 s B. 1.3 s C. 1.4 s D. 1.5 s E. 1.6 s